Please help Science. two containers of air are separated by a removable divider. the left side contains warm air; the right side contains cool air. When the divider is seprating the two sides is removed, the warm air will . Choose one answer below
A) remain on the left side, and the cool air will remain on the right side
B) flow to fill the bottom half of the container
C) flow to fill the top half container.

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.